Traction gate with camming bar

ABSTRACT

In a traction gate, a wire barrier comprises a plurality of normally horizontally disposed lengths of barbed wire each pivotally connected at one end to a first gate post and each extending to a normally vertically disposed standard. The bottom of the standard is secured to a second gate post by means of a forked portion depending from the standard and a cooperating Tbolt on the post. The upper part of the standard is provided with a roller which engages a camming bar curving outwardly from the second gate post to apply tension to the gate with gradually increasing mechanical advantage as the gate is closed. During the closing operation the mid-portion of the standard is received in a hook-shaped member mounted on the post which prevents bending of the standard from additional tension in the wires when generated by livestock engaging the gate.

United States Patent 11 1 Romberg Nov. 5, 11974 TRACTIQN GATE WITHCAMMING BAR Primary Examiner-W. C. Reynolds [76] lnventor: Felix B.Romberg, PO. Box 218, Assistant Examiner-Philip Karma Holland, 75218Attorney, Agent, or FirmRichards, Harris &

Medlock [22] Filed: Aug. 2, 11973 [2]] App], No.: 385,040 [57] ABSTRACTIn a traction gate, a wire barrier comprises a plurality [52] U.S. Cl.160/328, 49/34 of normally horizontally disposed lengths of barbed [51]Int. Cl. E05c 5/00, EOlf 13/00 wire each pivotally connected at one endto a first Field Of Search gate post and each extending to a. normallyvertically DIG. 71 disposed standard. The bottom of the standard issecured to a second gate post by means of a forked por- [56] ReferencesCited tion depending from the standard and a cooperating UNITED STATESPATENTS T-bolt on the post. The upper part of the standard is 1,245,55411 1917 Bell 292/238 Provided with a roller which engages Cumming2,109,300 2/1938 Mortensen 160/328 curving outwardly from the Secondgate P to pp 2,698,197 12/1954 Jacobson 292 1310. 71 ux tension to the gwith gradually increasing mechani- 2,747,910 5/1956 Salmon 160/328 X caladvantage as the gate is closed guring the clo sing 2,768,456 /1956operation the mid-portion of the standard is received 3,091.045 5/1963in a hook-shaped member mounted on the post which 3,327,998 6/1967Wycofl: 160/328 X revents bending of the standard from additional ten3165mm 3/1972 Odend ha} et 292/1310 71 X sion in the wires whengenerated by livestock engaging the gate.

18 Claims, 10 Drawing Figures 4 20 1111 F i 22 :l 88 28 15 106 9a 5 a4 1i 86 K 3 950 24 1 4 P 1 1 L, I a a a a 24 14 34 36 a 2 J 3 24 F 174 334/36 I} 120% 5 1 0 24 2 4 lh-44 *1 S4ZZE-V;::IT:L A

l a 24 a 44 34 36 is 570 L 40 24 a j MMHH 2 34 36 3a l TRACTION GATEWITH CAMMING BAR BACKGROUND AND SUMMARY OF THE INVENTION This inventionrelates generally to traction gates, and more particularly to animprovement in traction gates whereby a camming bar is utilized to applytension as the gate is closed.

It is common practice on farms and ranches to utilize simple wire gates(also known as gaps). Gates of this type usually comprise a barbed wirebarrier strung between vertical standards which are in turn supported byspaced gate posts. In many instances no means with mechanical advantageis provided for exerting traction on such a gate. Instead, the operatorsimply positions the standard at the openable end of the gate as closeas possible to the adjacent gate post and then loops a wire extendingfrom the gate post over the standard.

Gates of this type are economical, but do not utilize the full potentialof the barbed wire. It has thus been found that in many fence lineapplications greater overall economy is realized if the tension of thewire barrier of the gate is equal to and thereby counteracts the tensionof the fence line wires. Otherwise, the tension of the fence line wiresmust be controlled by other means, such as tall gate postsinterconnected by a wire at the top.

The co-pending application of Felix B. Romberg, Ser. No. 270,308, filedJuly 10, 1972, for TRACTION GATE discloses apparatus for applyingtraction either to a laterally swinging gate or to a wire barrier gate.By this means the tension of the fence line wires is counteractedwithout the necessity of utilizing additional apparatus for thispurpose. Two traction applying mechanisms are disclosed in the priorRomberg application, both of which utilize a traction mechanism mountedon the gate post at the openable end of the gate to engage apparatus onthe upper end of the adjacent standard and thereby apply traction to thewire barrier. The two traction mechanisms are further similar in thatthey are pivotable in a vertical plane and are thereby operated withequal facility from either side of the gate.

The present invention comprises a further improvement in the art oftraction gates. In accordance with the broader aspects of the invention,a gate post at the openable end of a wire barrier gate is provided witha camming bar. A standard at this openable end of the gate includes acam follower at the upper end which engages the camming bar as the gateis closed. By this means movement of the standard in one directionsubjects the gate to traction with gradually increasing mechanicaladvantage and movement in the opposite direction releases the gate withgradual reduction in tension.

In accordance with the more specific aspects of the invention, the gatepost and the standard at the openable end of the gate are provided witha cooperating T- bolt and a depending forked end, respectively, whichfunction to position and retain the lower end of the standard. The upperend of the standard is equipped with a roller which engages the cammingbar, and structure is provided for retaining the roller and protectingit from the elements when the gate is in the closed condition. Ahook-shaped member extends inwardly from the gate post and receives themid-portion of the standard, thereby preventing bending of the standardunder the action of additional tension in the wires generated bylivestock engaging the gate.

DESCRIPTION OF THE DRAWINGS A more complete understanding of theinvention may be had by referring to the following Detailed Descriptionwhen taken in conjunction with the accompanying Drawings, wherein:

FIG. I is a fragmentary side view of a gate incorporating a firstembodiment of the invention;

FIG. 2 is a sectional view taken generally along the line 2-2 in FIG. 1;

FIG. 3 is a partial sectional view taken generally along the line 3-3 inFIG. 1;

FIG. 4 is a sectional view taken generally along the line 4-4 in FIG. 1;

FIG. 5 is a partial sectional view taken along the line 55 in FIG. 1;

FIG. 6 is a partial sectional view taken generally along the line 6-6 inFIG. 5;

FIG. 7 is an illustration of a locking pin useful in conjunction withthe first embodiment of the invention;

FIG. 8 is a side view of the upper portion of the openable end of a gateincorporating a second embodiment of the invention;

FIG. 9 is a partial sectional view taken generally along the line 9-9 inFIG. 8; and

FIG. 10 is a partial sectional view taken generally along the line 10-I0in FIG. 9.

DETAILED DESCRIPTION Referring now to the Drawings, and particularly toFIG. 1 thereof, there is shown a traction gate 20 incorporating a firstembodiment of the invention. The traction gate 20 comprises part of afence structure 22 including a plurality of fence line wires 24 whichmay comprise barbed wire. The fence line wires 24 extend between spacedapart fence posts which may comprise either wooden or metal fence postsin accordance with particular requirements. The fence 22 furtherincludes a pair of gate posts 26 and 28 which are spaced apart to definea relatively wide opening therebetween. It will be understood that thefunction of the gate 20 is to normally close the opening between thegate posts 26 and 28 while facilitating selective opening thereof topermit the passage of livestock, farm equipment, etc. through the spacebetween the gate posts.

The traction gate 20 comprises a wire barrier defined by a plurality oflengths of barbed wire 30 each of which is substantially parallel to theground when the gate 20 is in the closed condition illustrated inFIG. 1. The lengths of barbed wire 30 are preferably formed fromstraight lengths of wire or from wire received on relatively largediameter rolls in order to prevent undue curling of the wires 30 whenthe gate 20 is opened. The wires 30 may also be formed from barbed wirereceived on relatively small diameter rolls, in which event the wires 30are preferably straightened. The wires 30 comprising the traction gate20 are preferably crosstied vertically by means of a plurality ofcommercially available helically twisted wire stays 32 which may bepositioned at longitudinal intervals of approximately three feet alongthe length of the traction gate 20.

The right-hand end (FIG. I of each wire 30 comprising the traction gate20 is secured to a short length of chain 34. Each length of chain 34 isin turn secured to an eye bolt 36. The eye bolts 36 extend through thegenerally gate post 28 and are each provided with a washer 38 and a nut40. By this means each wire 30 comprising the traction gate 20 isindividually hinged and adjustable for tension.

The left-hand ends (FIG. 1) of all of the wires 30 comprising the gate20 are secured to the shaft 41 of a standard 42 which is disposedvertically adjacent the gate post 26 when the gate is in traction. As isbest shown in FIG. 6, the strands of each wire 30 extend in a looparound the shaft 41 and through a lug 44 which is secured to the shafton that side which faces the post 26 when the gate is closed. The lug 44keeps the wire in place at its location, yet allows angular movementbetween the shaft and the wire, as when the gate is opened and closed,without destructive bending of the wire.

Referring to FIGS. 1 and 2, for supporting the lower end of the standard42, the gate post 26 is provided with a T-bolt 46 including a shank 48and a head 50 extending perpendicularly across the end of the shank. Theend of the shank 48 remote from the head 50 is threaded and receives awasher 52 and a nut 54. A strap 56 is welded to the shank 48 of theT-bolt 46 and extends upwardly axially along the gate post 26. A bolt 58extends through the strap 56 and through the gate post 26, and therebyserves to maintain the head 50 of the T-bolt in a horizontal position.

A plate 60 is welded to the bottom end of the shaft 41 of the standard42 and is provided with a depending forked portion 62. As is best shownin FIG. 2, the forked portin 62 includes a pair of spaced apart tines 64having tapered inner edges 66 and defining a semicircular opening 68between the tines 64. The forked portion 62 is thus adapted to receivethe shank 48 of the T-bolt 46 in the semi-circular opening 68 with thehead 50 of the T-bolt 46 disposed behind the tines 64. By this means thelower end of the standard 42 is securely retained horizontally andagainst downward displacement relative to the gate post 26.

As is best shown in FIGS. 4 and 6, the upper end of the standard 42comprises a roller 72 rotatable on the shaft 41 and preferably crowned.The roller 72 is retained between a stationary ring 74 and a plate 76secured across the end of shaft 41.

The traction gate 20 further includes a roller camming receiving andprotecting unit 78. As is best shown in FIGS. 1 and 6, the unit 78includes an inner bar 80 and a bolt 82 welded to the bar 80 andextending through the gate post 26. The end of the bolt 82 remote fromthe bar 80 is threaded and receives a washer 84 and a nut 86. A strap 88is secured to the unit 78 and extends upwardly therefrom axially alongthe post 26. A bolt 90 extends through the strap 88 and the post 26, andthereby maintains the orientation of the unit 78 lllustrated in FIG. 4.

Referring to FIGS. 4 and 6, the unit 78 further includes a top plate 92having a rear portion 94 depending therefrom, both of which are weldedto the inner bar 80. A camming bar 96 is in turn welded to the top plate92 and the rear portion 94 thereof. The camming bar 96 is spaced fromthe bar 80 sufficiently to admit the roller 72 therebetween. As is bestshown in FIGS. 4 and 5, the camming bar 96 curves outwardly with respectto the post 26 and extends somewhat angularly downwardly relative to thehorizontal to be parallel to the midway position of the roller 72 asshown in dashed lines in FIG. 4.

Referring to FIGS. 4 and 7, the traction gate 20 may be provided with aretaining pin 98 comprising a steel shank 100 and a length of wire 102secured to the upper end of the shank 100 and curving downwardly andinwardly to provide a handle and a locating surface 104. A collar 106 issecured to the upper surface of the top plate 92 and is provided with aslot 108. The pin 98 may be positioned in the retaining positionillustrated in FIGS. 4 and 5 by aligning the wire 102 with the slot 108,whereupon the shank 100 is allowed to pass through an aperture 110formed in the top plate 92. When it is desired to open the gate, thelocating surface 104 may be engaged with the top surface of the collar106 in the manner illustrated in dashed lines in FIG. 4, therebyretaining the shank 100 out of the path of the upper end of the standard42. As is shown in FIG. 5, the top plate 92 may be provided with anaperture 112 adapted to receive the shank of a padlock (not shown)thereby locking the traction gate 20.

Referring to FIGS. 1 and 3, whenever the traction gate 20 is in theclosed condition, the mid-portion 0f the standard 42 is received in ahook-shaped member 114. A shank 116 extends from the hook-shaped member1114 through the post 26. The end of the shank 1H6 remote from thehook-shaped member 114 is threaded and receives a washer 118 and a nut120, thereby facilitating adjustment of the position of the hook-shapedmember 114.

The function of the hook-shaped member 114 is to prevent bending of themid-portion of the standard 42 due to the additional tension generatedin the wires 30 by livestock contacts. To this end, the hook-shapedmember 114 and camming unit 78 preferably face toward the side of thefence 22 which will be most frequently employed to retain the livestock,etc. It is noted, however, that the hook-shaped member 114 serves toretain the standard 42 even if pressure is applied to the opposite sideof the traction gate 20. Thus, when such pressure exerted on the wires30 imposes a force on the standard 42 in the direction of the arrow 122,this increases the force applied by the standard 42 against the endportion 124 of the hook-shaped member 114. It will thus be understoodthat the frictional resistance tending to retain the standard 42 inengagement with the hook-shaped member 114 increases substantiallylinearly in proportion to an increase in the magnitude of a forceapplied to the standard 42 in the direction of the arrow 122.

To close the traction gate 20, the forked portion 62 at the lower end ofthe standard 42 is first advanced ahead of the lowermost wire 30 untilit is engaged with the T-bolt 46 in the manner illustrated in FIG. 1.The.

roller 72 is then engaged with the camming bar 96 and is moved towardthe plate portion 94 until it is positioned as shown in FIG. 5. To movethe roller along the camming bar, the standard 42 is grasped between thetwo uppermost wires 30 from either side of the gate, a zone 126 beingremoved from the adjacent side of the post 26 to provide clearance forthe hand.

As the traction gate 20 is being closed, the camming bar 96 functions togradually apply tension to the wires 30 comprising the gate 20. It willbe noted that when the upper end of the standard 42 is positioned asshown in FIG. 5, the tension imposed by the wires 30 on the standard 42extends substantially perpendicularly to the direction of the rollerengaged portion of the camming bar 96. Moreover, the roller 72isreceived under and between parts which protect it from rain, ice anddirt.

When the traction gate 20 is in the closed position,

I th wire 102 of the retaining pin 98 is aligned with the slot 108 inthe collar 106 and the shank 100 is allowed to pass through the aperture110. The shank 100 is thus positioned in the path of the upper end ofthe standard 42 and serves to retain the gate 20 in traction. The gate20 may also be locked by inserting the shank of a padlock through theaperture 112. It will be noted that the underside of the top plate 92 ispositioned sufficiently close to the plate 76 at the upper end of thestandard 42 to prevent opening of the gate 20 by simply raising thestandard 42 sufficiently to disengage the forked portion 62 from theT-bolt 46.

Those skilled in the art will appreciate the advantage of supporting theopenable end standard in the middle of its length as well as at its twoends. As carried out in this invention the middle support does notrequire attention in gate operation and allows the use of a standardwhich is both lighter in weight and more economical to produce.Moreover, with the camming action the gate can be closed at once withoutfirst locating a traction lever, and can be opened without risk of beinginjured by a tension actuated released lever.

Referring to FIGS. 8, 9 and 10, there is shown a traction gate 130comprising a second embodiment of the invention. The traction gate 130forms part of a fence structure 1132 including a plurality of fence linewires 134 extending between a plurality of spaced apart fence posts. Thefence 132 further includes a gate post 136 situated at the openable endof the traction gate 130. The traction gate 130 comprises a wire barrierdefined by a plurality of lengths of barbed wire 138 each of which isconnected to a gate post in the same manner illustrated in FIG. 1 withrespect to the connection of the wires 30 to the gate post 28. The wires138 of the gate 130 extend to a standard 140 having a lower end whichmay be identical to the lower end of the standard 42 as illustrated inFIGS. I and 2.

The uppermost wire 138 of the gate 130 is secured to the upper end ofthe standard 140 by means of a clevis 142 and a pin 144 extendingthrough the clevis 142 and the standard 140. The remaining wires 138 aresecured to the standard 140 by means of a plurality of lugs which may besubstantially similar in construction and purpose to the lugs 44 asshown in FIG. 6, except one lug 146.

A roller 150 is mounted on the standard 140 at a point situatedsubstantially beneath the upper end thereof. As shown in FIG. 10, theroller 150 is held in place between a lower ring 152 and an upper ring154.. To provide protection from rain water, the upper end of the roller150 is tapered and this taper is covered by an overhanging edge 158 ofthe ring 154.

The traction gate 130 further includes a camming and roller receivingunit 160. The unit 160 includes a shank 162 which extends through thepost 136 to a washer 164 and a nut 166. A strap 168 is secured to theunit 160 and extends downwardly therefrom axially along the post 136. Abolt 170 extends through the strap 168 and the post 136 and serves tomaintain the predetermined orientation of the unit 160 with respect tothe post 136.

The unit 160 comprises a camming bar 172 and a roller receiving portion174 formed integrally with the camming bar 172. A pair of ears 176extend upwardly from the roller receiving portion 174 and a retainingmember 178 is pivotally supported on the ears 176 by means of a pin M0.The member 178 is thus pivotable between the position shown in full anddashed lines in FIG. 8. It will be understood that when the member 178is positioned as shown in full lines, the standard 142 is secured intraction. When the gate is thus secured in traction, the lug 146 on thestandard 140 is adjacent to and extends beneath the structure of theroller receiving portion 174 where, by means of an upwardly facingshoulder 148, it prevents the standard 142 from being uplifted.

The traction gate shown in FIGS. 8, 9, and I0 is operated similarly tothe traction gate 20 shown in FIGS. 1-7, and is equally adapted forone-hand operation. One difference between the operation of the twogates comprises the fact that the standard of the gate 130 is grasped ata point above the roller and beneath the point of connection of theuppermost wire 138 to the standard. To this end, the portion of the post136 adjacent the uppermost portion of the standard 140 is removed toprovide a zone 182 which receives the hand of the operator.

The gate shown in FIGS. 8, 9, and 10 preferably includes hook means forreceiving and supporting the intermediate portion of the standard 140,such means being identical in structure and function to the members I14and 116 illustrated in FIGS. I and 3 and described in connection withthe first embodiment of this invention.

From the foregoing, it will be understood that the present inventioncomprises a traction gate incorporating numerous advantages over theprior art. Perhaps the most important feature of the invention relatesto the fact that there is provided a camming bar for applying tension toa wire barrier gate as the gate is closed. By this means tension isapplied gradually and automatically with mechanical advantage, andwithout the necessity ofthe operator manipulating a handle or otherapparatus in order to apply tension to the gate. Another importantfeature of the invention is that, simultaneously with the cammingmovement, the mid-section of the standard is received by a hook whichguards it against bending under extra wire tension such as occurs whenan animal delivers thrust against the side of the wire barrier.

A particular advantage of the first embodiment of the invention is thesuperior protection from rain, dirt and ice that is provided for theroller in the closed gate. With this protection the roller retainsgrease and remains free from corrosion.

Although specific embodiments of the invention have been illustrated inthe accompanying Drawings and described in the foregoing DetailedDescription, it will be understood that the invention is not limited tothe embodiments disclosed, but is capable of numerous rearrangements,modifications, and substitutions of parts and elements without departingfrom the spirit of the invention.

What is claimed is:

1. Apparatus for securing a wire gate in traction, comprising:

a gate post;

a standard positionable adjacent said gate post to support one end of atensionable wire gate barrier;

means for making a pivotal connection between the lower end of saidstandard and said post;

a roller rotatably mounted at the upper end of said standard; and

a traction block stationary on said gate post and defining alongitudinally convex camming edge for said roller extending between apoint of beginning and a location for holding said roller to retain thewire gate in traction;

said camming edge being longitudinally substantially perpendicularrelative to said wire gate barrier at said holding location and beingincreasingly inclined towards said wire barrier outward from saidlocation.

2. In a traction gate wherein a standard at the openable end of the gatesupports one end of a wire gate barrier in tension and is in turnsupported by a gate post;

rigid upper, lower and intermediate means mounted on said gate post forsupporting said standard;

said upper supporting means comprising roller camming and terminalroller receiving portions;

said standard comprising a rotatably mounted roller for following saidcamming portion to said receiving portion;

said lower supporting means being constructed and positioned forpivoting said standard so the roller travels along said camming portionto said receiving portion; and

said intermediate supporting means comprising a hook for receiving saidstandard as said roller is moved along said camming portion to saidreceiving portion.

3. The combination according to claim 2 in which said lower supportingmeans comprises a stationary T- bolt extending from said gate post andthe lower end of said standard comprises a forked portion for receivingsaid T-bolt, said T-bolt having a laterally expanded end to retain saidforked portion against gate wire barrier tension and to establish thestandard in a specific angular position.

4. The combination according to claim 2 in which said standard is around shaft at its association with said stationary hook and saidstationary hook is at the end of a bolt extending through said gatepost.

5. For use in conjunction with a gate post carrying a stationary T-boltand a stationary camming bar, a gate end standard for supportingtensionable longitudinal wires, comprising:

a shaft;

a forked portion extending longitudinally beyond one end of said shafton one side of the axis of said shaft to receive said Tbolt andestablish the angular position of said shaft;

a roller rotatably mounted along th other end of said shaft for rollingalong said camming bar; and

lugs secured to said shaft at spaced intervals on the same side of theaxis of said shaft as said forked portion;

said lugs defining loops over portions of said shaft for containing saidlongitudinal wires and keeping them in place on said standard.

6. A traction block for anchoring a roller topped wire traction gate endstandard to a gate post, comprising:

a first structural element defining a longitudinally convex camming edgefor engagement by the roller of said roller topped gate end standard;

a second structural element spaced from said camming edge for movementof said roller between them to a terminal point of its movement on saidcamming edge;

connecting means for connecting said first structural element with saidsecond structural element above said roller at said terminal point;

bolt means integral with said second structural element and extendingtherefrom for extending through said gate post to secure the tractionblock thereto; and

arm means extending from said traction block for connecting saidtraction block to said gate post at a point spaced from said bolt meansto prevent pivoting of said traction block at said bolt means;

the said terminal point on said camming edge being substantially alignedwith said bolt means and said camming edge at said terminal point beinglongitudinally substantially perpendicular to this alignment.

'7. A traction block for securing a roller topped wire traction gate endstandard to a gate post, comprising:

bolt means for extending through said gate post to secure said tractionblock thereto;

a first structural element transverse to the direction of said boltmeans;

said first transverse structural element defining a longitudinallyconvex camming edge for engagement in a path of movement by the rollerof said roller topped gate end standard;

a second structural element transverse to the direction of said boltmeans;

said second transverse structural element being integral with said boltmeans and being spaced from said camming edge for movement of saidroller therebetween;

said first and second transverse structural elements being cobnected oneto the other;

terminal structure to close the path of movement of said roller alongsaid camming edge; and

latch means projectable into the path of movement of said roller toretain said roller adjacent said terminal structure.

8. The traction block according to claim 7 wherein said latch meanscomprises a tube extending away from said path of movement of saidroller, and a latch bolt is slidable in said tube.

9. For use in conjunction with a pair of spaced apart gate posts, atraction gate comprising:

a wire barrier pivotally secured at one end to one of the gate posts andhaving a length substantially equal to the distance between the gateposts;

a normally vertically disposed standard secured to the opposite end ofthe wire barrier and defining the openable end of the gate;

means for securing the lower end of the standard to the second gatepost;

a roller mounted on the upper part of the standard;

and

a camming bar curving outwardly from the second gate post forcooperation with the roller on the standard to gradually apply tensionto the wire barrier as the gate is closed.

10. The traction gate according to claim 9 further including meansmounted on the second gate post for receiving the mid-portion of thestandard as the gate is closed and thereby preventing bending of themidportion of the standard due to tension in the wire barrier while thegate is closed.

11. The traction gate according to claim 10 wherein the means forsecuring the lower end of the standard to the second gate post comprisesa forked portion depending at the bottom of the standard and a T-boltextending from the second gate post to receive the forked portion of thestandard.

12. The traction gate according to claim 11 wherein the camming barfurther is associated with structure which includes means forselectively retaining the standard in the closed condition.

13. The traction gate according to claim 12 wherein the roller of thestandard comprises the uppermost portion thereof, and wherein thecombined camming bar and associated structure substantially protectivelyenclose the roller when the standard is in the closed condition.

14. The traction gate according to claim 12 wherein the roller of thestandard is mounted substantially beneath the upper end thereof, andfurther including han dle means comprising a portion of the standardextending above the roller.

15. A traction gate comprising:

fence structure including first and second spaced apart gate posts;

a plurality of bolts secured in the first gate post and extending towardthe second gate post;

a plurality of lengths of chain each secured to one of the bolts;

a plurality of lengths of barbed wire each secured to one of the lengthsof the chain;

an elongate, normally vertically disposed standard;

said lengths of barbed wire each being secured at the end remote fromthe lengths of chain to the standard and secured against axialdisplacement with respect thereto;

a T-bolt secured in the second gate post and extend ing towards thefirst gate post;

a forked portion extending downwardly at the bottom of the standard forengagement with the T-bolt to secure the lower end of the standard tothe lower part of the second gate post;

a roller mounted on the upper part of the standard;

a roller receiving and camming unit secured to the upper end of thesecond gate post and comprising a roller cooperating camming bar curvingtoward the second gate post and a roller receiving portion positioned inalignment with the first and second gate posts;

Said roller cooperating camming bar being curved to gradually applytension to the barbed wire as the traction gate is being closed.

16. The traction gate according to claim 15 further including ahook-shaped member secured in the second gate post and extendingtherefrom towards the first gate post for receiving the mid-portion ofthe standard as the traction gate is closed and thereby limiting bendingof the standard due to the action of tension in the barbed wires.

17. The traction gate according to claim 15 wherein the roller comprisesthe uppermost portion of the standard and wherein the combined cammingbar and roller receiving unit further includes protecting means forsubstantially enclosing the roller when the standard is in the closedcondition.

18. The traction gate according to claim 15 wherein the roller ismounted on the standard at a point substantially beneath the upper endthereof and wherein the standard further includes handle meanscomprising a portion of the standard extending upwardly from the roller.

1. Apparatus for securing a wire gate in traction, comprising: a gatepost; a standard positionable adjacent said gate post to support one endof a tensionable wire gate barrier; means for making a pivotalconnection between the lower end of said standard and said post; aroller rotatably mounted at the upper end of said standard; and atraction block stationary on said gate post and defining alongitudinally convex camming edge for said roller extending between apoint of beginning and a location for holding said roller to retain thewire gate in traction; said camming edge being longitudinallysubstantially perpendicular relative to said wire gate barrier at saidholding location and being increasingly inclined towards said wirebarrier outward from said location.
 2. In a traction gate wherein astandard at the openable end of the gate supports one end of a wire gatebarrier in tension and is in turn supported by a gate post; rigid upper,lower and intermediate means mounted on said gate post for supportingsaid standard; said upper supporting means comprising roller camming andterminal roller receiving portions; said standard comprising a rotatablymounted roller for following said camming portion to said receivingportion; said lower supporting means being constructed and positionedfor pivoting said standard so the roller travels along said cammingportion to said receiving portion; and said intermediate supportingmeans comprising a hook for receiving said standard as said roller ismoved along said camming portion to said receiving portion.
 3. Thecombination according to claim 2 in which said lower supporting meanscomprises a stationary T-bolt extending from said gate post and thelower end of said standard comprises a forked portion for receiving saidT-bolt, said T-bolt having a laterally expanded end to retain saidforked portion against gate wire barrier tension and to establish thestandard in a specific angular position.
 4. The combination according toclaim 2 in which said standard is a round shaft at its association withsaid stationary hook and said stationary hook is at the end of a boltextending through said gate post.
 5. For use in conjunction with a gatepost carrying a stationary T-bolt and a stationary camming bar, a gateend standard for supporting tensionable longitudinal wires, comprising:a shaft; a forked portion extEnding longitudinally beyond one end ofsaid shaft on one side of the axis of said shaft to receive said T-boltand establish the angular position of said shaft; a roller rotatablymounted along th other end of said shaft for rolling along said cammingbar; and lugs secured to said shaft at spaced intervals on the same sideof the axis of said shaft as said forked portion; said lugs definingloops over portions of said shaft for containing said longitudinal wiresand keeping them in place on said standard.
 6. A traction block foranchoring a roller topped wire traction gate end standard to a gatepost, comprising: a first structural element defining a longitudinallyconvex camming edge for engagement by the roller of said roller toppedgate end standard; a second structural element spaced from said cammingedge for movement of said roller between them to a terminal point of itsmovement on said camming edge; connecting means for connecting saidfirst structural element with said second structural element above saidroller at said terminal point; bolt means integral with said secondstructural element and extending therfrom for extending through saidgate post to secure the traction block thereto; and arm means extendingfrom said traction block for connecting said traction block to said gatepost at a point spaced from said bolt means to prevent pivoting of saidtraction block at said bolt means; the said terminal point on saidcamming edge being substantially aligned with said bolt means and saidcamming edge at said terminal point being longitudinally substantiallyperpendicular to this alignment.
 7. A traction block for securing aroller topped wire traction gate end standard to a gate post,comprising: bolt means for extending through said gate post to securesaid traction block thereto; a first structural element transverse tothe direction of said bolt means; said first transverse structuralelement defining a longitudinally convex camming edge for engagement ina path of movement by the roller of said roller topped gate endstandard; a second structural element transverse to the direction ofsaid bolt means; said second transverse structural element beingintegral with said bolt means and being spaced from said camming edgefor movement of said roller therebetween; said first and secondtransverse structural elements being cobnected one to the other;terminal structure to close the path of movement of said roller alongsaid camming edge; and latch means projectable into the path of movementof said roller to retain said roller adjacent said terminal structure.8. The traction block according to claim 7 wherein said latch meanscomprises a tube extending away from said path of movement of saidroller, and a latch bolt is slidable in said tube.
 9. For use inconjunction with a pair of spaced apart gate posts, a traction gatecomprising: a wire barrier pivotally secured at one end to one of thegate posts and having a length substantially equal to the distancebetween the gate posts; a normally vertically disposed standard securedto the opposite end of the wire barrier and defining the openable end ofthe gate; means for securing the lower end of the standard to the secondgate post; a roller mounted on the upper part of the standard; and acamming bar curving outwardly from the second gate post for cooperationwith the roller on the standard to gradually apply tension to the wirebarrier as the gate is closed.
 10. The traction gate according to claim9 further including means mounted on the second gate post for receivingthe mid-portion of the standard as the gate is closed and therebypreventing bending of the mid-portion of the standard due to tension inthe wire barrier while the gate is closed.
 11. The traction gateaccording to claim 10 wherein the means for securing the lower end ofthe standard to the second gate post coMprises a forked portiondepending at the bottom of the standard and a T-bolt extending from thesecond gate post to receive the forked portion of the standard.
 12. Thetraction gate according to claim 11 wherein the camming bar further isassociated with structure which includes means for selectively retainingthe standard in the closed condition.
 13. The traction gate according toclaim 12 wherein the roller of the standard comprises the uppermostportion thereof, and wherein the combined camming bar and associatedstructure substantially protectively enclose the roller when thestandard is in the closed condition.
 14. The traction gate according toclaim 12 wherein the roller of the standard is mounted substantiallybeneath the upper end thereof, and further including handle meanscomprising a portion of the standard extending above the roller.
 15. Atraction gate comprising: fence structure including first and secondspaced apart gate posts; a plurality of bolts secured in the first gatepost and extending toward the second gate post; a plurality of lengthsof chain each secured to one of the bolts; a plurality of lengths ofbarbed wire each secured to one of the lengths of the chain; anelongate, normally vertically disposed standard; said lengths of barbedwire each being secured at the end remote from the lengths of chain tothe standard and secured against axial displacement with respectthereto; a T-bolt secured in the second gate post and extending towardsthe first gate post; a forked portion extending downwardly at the bottomof the standard for engagement with the T-bolt to secure the lower endof the standard to the lower part of the second gate post; a rollermounted on the upper part of the standard; a roller receiving andcamming unit secured to the upper end of the second gate post andcomprising a roller cooperating camming bar curving toward the secondgate post and a roller receiving portion positioned in alignment withthe first and second gate posts; said roller cooperating camming barbeing curved to gradually apply tension to the barbed wire as thetraction gate is being closed.
 16. The traction gate according to claim15 further including a hook-shaped member secured in the second gatepost and extending therefrom towards the first gate post for receivingthe mid-portion of the standard as the traction gate is closed andthereby limiting bending of the standard due to the action of tension inthe barbed wires.
 17. The traction gate according to claim 15 whereinthe roller comprises the uppermost portion of the standard and whereinthe combined camming bar and roller receiving unit further includesprotecting means for substantially enclosing the roller when thestandard is in the closed condition.
 18. The traction gate according toclaim 15 wherein the roller is mounted on the standard at a pointsubstantially beneath the upper end thereof and wherein the standardfurther includes handle means comprising a portion of the standardextending upwardly from the roller.